Mounting for a flexible translucent motion picture screen



May`295 1934- F. w. JACKMAN Filed Oct.

SP/VV INVENTOR: f1@ W'. HEKMHN A TTORN Y.

Patented May 29, 1934 MOUNTING Fon A FLEXIBLE TaANsLUcENT MoTIoNrlc'rUnE SCREEN Fre'd W. Jackman, Beverly Hills, Calif., assigner toWarner Bros. Pictures, Inc., New York, N. Y., a corporation of DelawareApplication omverv 11, 1932, serial No. 631,292

This mvennon relates .iq a nexibie transic-v cent motion picture screenand more particularly to apparatus and method for mounting the same.

It has heretofore been proposed to employ a heavy glass cscreen having aground surface on which a picture or motion pictures areto be' whichshows a flexible translucent screen resiliently mounted in a movablesupporting frame.

-A-screen suitable for the projection of motion pictures which are to beviewed or photographed from the opposite side thereof, must be light inweight and iiexible, so that it 'may be easily moved. Such a screenlasthis, is disclosed in myv co-pending application, S. N. 631,964 filedSeptember 7, 1932. Therein is disclosed a cellulose acetate screen, inthe preparation vof which a solution of cellulose acetate lis sprayedunder gravitational pressure onto an uneven or roughened at surface suchas a large sheet of ground glass. A multiple coating of theA solution isapplied to thesurface, and ontoa border of' canvas, each coating'beingpermitted to dry.

`After the final coating has dried, a. unitary sheet of exibletranslucent material with its border may be stripped from the base onwhich it was l formed, thereby. forming a non-fragile translucent screenwhich may bel manufactured economically of any desired size.

In orderr to provide a convenient arrangement for supporting thelarge;sheet' of cellulose lace- 60 tate, so made, substantiallyA in aplane without wrinkles, a flexible translucent motion picture screen'lhas integrally united with,its edge a border of canvas 2, in which thereare a series of eye-lets 3 for attachment to a frame. 4. Frame 65 4 issupported fol` mobility by means of suitable rollers 5 and 6. The frame4 may be of any s uitable material, preferably Wood, and of anyconvenient size to accommodate the screen 1. A- series of pins orfastening members 7 are placed 70 along the edges of the frame 4 .andare resiliently connected v by means of helical springs, rubber bands,or any other suitable elastic mem-1 bers 8 `to the corresponding seriesof eye-lets 3 in the border 2. i v l By using this form of mounting, thescreen will always remain taut without any wrinkles .therein, and theassembly constitutes alight mobile unit that may be quickly and safelymoved from place to .place without any danger to workmen.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is: y. i t,

In combination, a flexible translucent motion picture projection screenof cellulose material, a reinforcing edge for said screen having aseries of apertures therein, meansV comprising some of said cellulosematerial for integrally uniting said reinforcing edge with said screen,a supporting frame, `ya series of fastening members onsaid frame, andelastic means for interconnecting said apertures and said fasteningmembers.

A FRED W. {mem/TAN.

